Today will be the launch of the görli testnet at GörliCon (with chainID and networkID 5) - prepare your wallets! This testnet is exciting as it brings geth and parity closer together. Before geth and parity had separate PoA testnets (geth:rinkeby | parity:kovan) - now there will be a PoA tetnet where both clients (and more clients) can work together in harmony.